Question

Why is it important to retain wetlands to combat floods?

• A. Wetlands completely stop water from passing through them.
• B. Wetlands act like sponges and absorb water during floods.
• C. Wetlands help in evaporating water and thus reduce the effect of floods.
• D. Wetlands cannot help in any way during floods.

Answer 1

The correct option is B Wetlands act like sponges and absorb water during floods.

A wetland is a distinct ecosystem that is flooded by water, either permanently or seasonally, where oxygen-free processes prevail. Wetlands prevent flooding by holding water much like a sponge. By doing so, wetlands help keep river levels normal and filter and purify the surface water. Wetlands accept water during storms and whenever water levels are high. When water levels are low, wetlands slowly release water.